Niagara DR over Castle Hill Creek
Fair Condition40 years old684 vehicles/day
Location
| State | Iowa |
| County | Black Hawk |
| Location | City Culvert No. 47c |
| Carries | Niagara DR |
| Crosses | Castle Hill Creek |
| Coordinates | 42.51604, -92.39794 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Width | 39.0 ft (11.9 m) |
| Deck Area | 94.0 sq m |
| Main Spans | 2 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 684 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000504070 |